Excavating tool



Feb. 4, 1941 E. LOOS ET AL 2,230,498

I EXCAVATING TOOL Filed June 5, 1940 2 Sheets-Sheet l fig. 2.

Inventors 9 E0 WARD L 005 A iiorney Feb.'4, 1941. 5 L0 5 ETAL 2,230,498

EXCAVATING TOOL Filed June 5, 1940 2 Sheets-Sheet 2 1n vsniors EDWAR 005EMA/e0 W/TTHz/HM Patented Feb. 4, 1941 Artur OFFICE EXCAVATING TOOLEdward Loos and Richard Witthuhn, Bazine, Kans.

Application June 5, 1940, Serial No. 339,035

4 Claims.

This invention relates to an excavating tool or dipper, and has for theprimary object the provision of a device of this character which will beconvenient to use in the removal of earth 6 and other loose particlesfrom an excavation and which will be simple to operate and includesclam-shaped jaws and an operating means therefor whereby said jaws maybe easily and quickly closed and opened and when open may be read- 10ily forced through earth so that on being closed a maximum amount ofearth will be trapped therein and conveyed to a place of dumping withoutthe loss of earth.

With these and other objects in view as will 15. become more apparent asthe description proceeds, the invention consists in certain novelfeatures of construction, combination and arrangement of parts as willbe hereinafter more fully I described and claimed.

2Q For a complete understanding of our invention, reference is to be hadto the following description and accompanying drawings, in which Figure1 is a side elevation illustrating an excavating tool constructed inaccordance with our invention.

Figure 2 is an elevational View taken at right angles to the showingmade in Figure 1.

Figure 3 is a fragmentary enlarged side elevation showing the jaws ofthe tool in a fully open 30 position.

Figure 4 is a sectional view taken on the line 44 of Figure 2.

Figure 5 is a sectional view taken on the line 55 of Figure 1.

Figure 6 is a sectional view taken on the line 66 of Figure 3.

Referring in detail to the drawings, the numeral 5 indicates a tubularmast which has secured to one end a cross head 6, the ends of 40 whichare reduced to form pintles 1 and journaled on the latter areclam-shaped jaws 8. Formed on the non-working edges of the jaws 8 arebearings 9 to receive pivot pins ill for connecting to the jaws toggletype links H and said 45 links are in turn pivotally connected to aplate 5 the pin I5 extending therethrough. The operating rod extendsoutwardly of the mast and is pivotally connected to an operating leverH. The operating lever ll includes a handle l8 at one end thereof andits opposite end is pivotally connected to a connecting link [9 which ispivoted on the mast, as shown at 20, acting as a fulcrum for the pivotalmovement of the lever H. The pivotal movement of the lever I! in onedirection with the mast held in a relatively fixed position will bringabout closing of the jaws and a reverse movement of the lever ll willbring about opening of the jaws.

By referring to Figures 4 and 5 it will be seen that the toggle linksare arranged in pairs with the links of each pair crossing the links ofthe other pair and each link includes a straight portion with ahook-shaped end. The hook-shaped end is pivoted on the plate ll of theoperating sleeve l3.

The mast may be provided with a ring 2| to which a hoisting cable may beconnected while the sleeve I3 is equipped with a loop member 22 to whicha dumping cable may be connected.

A tool of the character described and shown in the drawings, will beextremely durable, economical to manufacture and maintain in use andeasily repaired. Furthermore, it will be seen that a tool of thischaracter is extremely simple to handle and operate for the purpose ofclosing the jaws onto earth and then opening the jaws to free the earthwhen the device has been moved to a selected place.

While we have shown and described the preferred embodiment of ourinvention, it will be understood that minor changes in construction,combination and arrangement of parts may be made without departing fromthe spirit and scope of the invention as claimed.

What we claim is:

1. In a tool of the character described, a mast, clam shell type jawspivotally mounted on one end of the mast, an operating sleeve slidablymounted on themast, means for connecting the sleeve to said jaws, anoperating rod slidable in said mast, means for connecting the operatingrod to said sleeve, and an operating means connected to the rod forimparting movement in opposite directions thereto to bring about openingand closing of the jaws. v

2. In a tool of the character described, a tubular mast, a cross headsecured to one end of the mast and having reduced ends to form pintles,clam shell type jaws journaled on said pintles, a sleeve slidable on themast, toggle means conslidable in the mast, means for connecting the rodto said sleeve, and a hand operated means connected to the rod and tothe mast.

3. In a tool of the character described, a tubular mast having opposedslots, a cross head secured to one end of the mast, jaws pivoted on thecross head, a sleeve slidable on the mast, a pin carried by said sleeveand extending through the slots, toggle links connecting the sleeve tosaid jaws, a rod slidable in said mast and connected to the pin, and anoperating means connected to the mast and to the rod.

4. In a tool of the character described, a tubu- EDWARD LOOS. RICHARDWITTHUHN.

